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Question Provide a symbol for each of the following neutral isotopes. Include the atomic number and mass number for each. (a) the chalcogen with a mass number of 125 (b) the halogen whose longest-lived isotope is radioactive (c) the noble gas, used in lighting, with 10 electrons and 10 neutrons (d) the lightest alkali metal with three neutrons

/in /by

Question

Provide a symbol for each of the following neutral isotopes. Include the atomic number and mass number for

each.

(a) the chalcogen with a mass number of 125

(b) the halogen whose longest-lived isotope is radioactive

(c) the noble gas, used in lighting, with 10 electrons and 10 neutrons

(d) the lightest alkali metal with three neutrons

 
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